I am inclined to disagree. Isn't a songwriter a composer? Was Tom Dooly composed or written? Was Take 5 composed or written?

Definition of composer

: one that composes; especially : a person who writes music

Definition of songwriter

: a person who composes words or music or both especially for popular songs

My emphasis.

Was Dave Brubeck a songwriter on the popular Take 5 and a composer for everything else he wrote.

Were classical composers just songwriters? Classical music is based on three or four chords, I, IV, V with an occasional iim, just like modern music.
See here:

http://www.secretsofsongwriting.com/2011/02/01/stealing-from-classical-music-to-write-your-next-song/

Thus to me songwriters and composers are one in the same. YMMV


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